Electric steam radiator



July 22 1924.

A. CJHULBERT ELECTRIC STEAM RADIATOR Filed Sept. 8. 1921 Patented July22, 1924.y j

PATENT OFFICE.

ANSEL C. HULBERT, OF SAN CARLOS, CALIFORNIA.

ELECTRIC STEAM RADIATOR.

Application tiled September 8, 1921. Serial No. 499,290.

T o all whom 'it may concern.' y

Be it known that I, ANsEL C. ,HULBERn a citizen of the United States,residing at San Carlos; in the county of San Mateo, State of California,have invented a new and useful Electric Steam Radiator, of which thefollowing is a specification in such full and clear terms as will enablethose skilled in the art to construct and use the same.

This invention relates to an electric steam radiator and its object isto provide an automatic steam radiator which will have a receptacle' forthe water below the body of the radiator so connected thereto as to keepthe radiator properly drained at all times, and thereby completelyinsure the circulation of steam from the boiler through the heatradiating coils and back to the boiler when condensed, thereby effectinga satisfactory transfer of heat from the steam to the room in which theheater is placed.

Another object of the invention is to so position the Water glass andautomatic cutout as to make them easy of access.

A further object of the invention is to provide a special coil whichwill give off sufhcient heat to prevent the water in the radiator fromfreezing, if the radiator is used in a country cold enough to be likelyto freeze Iit up completely when not in ordinary use.

Other objects of the invention will appear as the description proceeds.

An embodiment of the invention is shown in the accompanying drawings inwhich the same reference numeral is applied to the same portionthroughout, but I am aware that there may be modifications thereof.

Fig. 1 is ay side elevation ofthe complete radiator.

- Fig. is an end view of the same.

Fig. 3 is a sectional view on a slightly larger scale bf the boiler andconnection of the radiator, also showing the regulator in section.

Fi 4 is a diagrammatic view of the electrica connections, and

Fig. 5 shows the face plate of the boiler with the electric circuitplugs projecting therefrom.

The radiator comprises two end sections 1 and 2 which have legs 3 and 4mounted on castors 5 and y6 in order that the radiator may beconveniently moved around the 43, 44 which form the sup room. `There isan air valve 7 V011 the sec. tion 1, and safety valve 8 on the section2. While these sectionsareseparated by a plurality of sections 9 to 111inclusive, the number; of sections may be increased or diminished atwill. t

The end section 1 has a hole in its lowest part to receive the pipe- 12.This pipe is screwed thereinto and has the union 13 for connecting it toa nipple 14 screwed into the lowest part of the rectangular boiler 15.

At its opposite end the boiler has a larger pipe 16 screwed thereintoand which pipe screws into a steam casing 17 having a liange 18 forconnectionwith the flange 19 on the nipple 2O which is screwed into theradiator section 2.

It will be understood by those skilled in the art that the radiatorsections are suitably bolted together to prevent the escape of steam attheir joints. v

The boiler has four holes to receive the terminal receptacles 21 to 24inclusive, each of which Vplugs carry a heating coil` 25. Mounted on thetop of the casing 17 is a. nipple 26 which in turn carries the casing 27which forms the chamber for the operation of the diaphragm regulator 28.i Thel diaphragm is held against the casing 27 by means of bolts 29, andanother casing 30 encloses the diaphragm and forms the support for a-pin31 bearing upon the diaphragm.

The pin 31 bears upon'a lever 32 which in turn has a cross-bar 33bearing upon the two levers 34, 35. The levers 34, 35 are supported byflexible springs 36 screwed to a block 37 insulated from the rest of thestructure by means of the pad of insulating material 38.

.At the top of the regulator there is a clam ing member 39 which has anlinsulating bre 40 secured within the same and within which is the block41 for holding the adjustable contact screw 42. On the one side of thecasing 17 there are two elbows rt for the water glass 45 to determinethe evel of the water in the boiler.

A cable 46 extends from the face plate of the boiler to the regulatingapparatus for varying the current to maintain a. given radiatortemperature.

In order to prevent the regulatin apparatus from bemg tampered with tere is provided a cover plate 47. Current is sup- W ich plug ma-y beconnected er of the termlnal receptacles 50 The terminal receptacle 50is atand plu 49 with @ai or 51.

tached to the heating terminal receptacle 22,

whilethe terminal receptacle 51 is attached to the heating terminalreceptacle 21. The

terminal receptacle 50 Asupplies one of the coils with a sufficientamount of current to prevent the water in the radiator f1 om l freezing,but not suilicient to make necessary the operation of the regulator.

When more heat is required the plug 49 is changed to the terminalreceptacle 51, whereupon current is supplied to the three coils 25 asillustrated in Figure 4, in which the numerals 52, 53 indicate thecurrent supply wires, 54 a wire extending to the block 37, 55 a wireextendin from a contact on the block 37 to one o the coils 25, 56 awireextending from the other connecting screw 42 under the lever 35 toanother of the coils 25, while wires 57, 58 serve to connect the otherlterminal of the two coils y25j with the feed wire 53.

The result of the foregoing construction is that three of the coils 25will receive current in arallel when the plug 49 is attached to the p ug51, and Yif the pressure gets high enough the diaphragm will disconnectone or both of the coils 2 5 receiving current.

from the'two wires 55, 56, the load being vbroken on one coil firstthereby reducing the load and then upon the other coils to avoid unduesparking, while at' all. times when the power is connected` with the aparatus one of the coils give yoi some heat rom the current suppliedthereto,'regardless of the op- .of my invention:

1. An electric steam radiator, comprising a plurality of connectedradiator sections, legs to support the radiator sections above the floorlevel, and means for regulating the current su plied to the heatingelements whereby t e danger of exceeding a safe pressure within theradiator is avoided lone of said elements being unregulated to keep theradiator warmer than the atmospher when connected.

2. An electric steam radiator comprising a plurality of radiatorsections secured together, legs for supporting said radiator sectionsabove the level of the door, a closed water receptacle supported betweenthe legs, pipes connecting the water receptacle with the lower portionof the radiator sections,

ja pluralityof electric heating units in the waterreceptacle, and asteam pressure operated electric switch for regulating the currentsupplied to .certain of the heating elements in the water receptaclewhereby the production of an excessive pressure within the radiator isprevented one heating ele- -ment being without regulation to keep the,heater warm whenever 1t is connected.

ANsEL o. HULBERT.

